WO2022009405A1 - Information processing device, program, and control method - Google Patents

Information processing device, program, and control method Download PDF

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Publication number
WO2022009405A1
WO2022009405A1 PCT/JP2020/026935 JP2020026935W WO2022009405A1 WO 2022009405 A1 WO2022009405 A1 WO 2022009405A1 JP 2020026935 W JP2020026935 W JP 2020026935W WO 2022009405 A1 WO2022009405 A1 WO 2022009405A1
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frequency
unit
terrestrial digital
reception
wireless communication
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PCT/JP2020/026935
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French (fr)
Japanese (ja)
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俊行 高橋
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ソニーグループ株式会社
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Priority to PCT/JP2020/026935 priority Critical patent/WO2022009405A1/en
Publication of WO2022009405A1 publication Critical patent/WO2022009405A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Definitions

  • This disclosure relates to an information processing device, a program, and a control method.
  • the information processing device may include not only a device that transmits and receives radio waves for communication but also a device that transmits radio waves during driving. When the frequencies of the transmitted radio waves overlap, one device becomes a noise source for the other device. As a device that copes with the influence of such a noise source, by mounting a countermeasure component such as a bypass filter on the propagation path of the noise source, the frequency of the operating clock of the device that becomes the noise source is multiplied. There is a device that suppresses sensitivity deterioration when receiving terrestrial digital television broadcasts. Further, there is a device that suppresses leakage of radio waves from a noise source by covering a device that becomes a noise source with a metal leaf cover in order to suppress radio waves from the noise source (see Patent Document 1).
  • the noise source and the antenna tend to be close to each other due to the miniaturization of the device, and unnecessary noise tends to be added to the signal of the antenna. Further, in electronic devices such as mobile phones, it may be difficult to secure a place where countermeasure parts can be arranged due to the thinning and miniaturization.
  • the present disclosure proposes an information processing device, a program, and a control method that enable reception of terrestrial digital broadcasting without causing a decrease in reception sensitivity even in the presence of a noise source.
  • the frequency of the wireless communication unit that receives terrestrial digital broadcasting, the transmission device that transmits radio waves, and the transmission device that does not affect the frequency band used by the wireless communication unit for wireless communication is set to the frequency band used by the wireless communication unit for wireless communication.
  • an information processing apparatus including a control unit that operates at the frequency of the transmitting device that does not affect noise is provided.
  • a step of selecting a broadcast signal of terrestrial digital broadcasting received by the wireless communication unit for each channel a step of specifying a frequency band of the selected terrestrial digital broadcasting channel, and the above-mentioned.
  • the program is offered.
  • a step of selecting a broadcast signal of terrestrial digital broadcasting received by the wireless communication unit for each channel a step of specifying a frequency band of the selected terrestrial digital broadcasting channel, and the above-mentioned.
  • the information processing including a step of receiving and demodulating a terrestrial digital broadcast to determine the reception state, and a step of changing the frequency of the transmitting device to a preset frequency when the reception state is determined to be poor.
  • a method of controlling the device is provided.
  • FIG. 1 is a diagram showing a configuration example of an information processing apparatus according to the present embodiment of the present disclosure.
  • the information processing device 10 is, for example, a mobile phone such as a smartphone, a tablet terminal, a notebook computer, or a television.
  • the information processing device 10 shown in FIG. 1 includes a wireless communication unit 100, a user interface unit 200, a control unit 300, and a storage unit 400.
  • the wireless communication unit 100 performs wireless communication using various radio frequency bands. As shown in FIG. 1, the wireless communication unit 100 includes a mobile communication unit 110 (800 MHz band, 2 GHz band, etc.) for transmitting and receiving data via a mobile phone network, and terrestrial digital broadcasting communication for receiving terrestrial digital broadcasting (DTV). A part 120 and the like.
  • a mobile communication unit 110 800 MHz band, 2 GHz band, etc.
  • DTV terrestrial digital broadcasting
  • FIG. 2 is a diagram showing a configuration example of the terrestrial digital broadcast receiving unit of the present disclosure.
  • the terrestrial digital broadcasting communication unit 120 includes a reception antenna unit 122, a reception demodulation unit 124, and a reception quality detection unit 126.
  • the receiving antenna unit 122 receives the terrestrial digital broadcast wave.
  • the receiving antenna unit 122 includes an antenna, and the length of the antenna may be formed to be about 1/4 wavelength of the broadcast signal of terrestrial digital broadcasting.
  • the reception demodulation unit 124 includes an OFDM demodulation unit 1240, an error correction unit 1242, a multiple separation unit 1244, an MPEG decoding unit 1246, and an image superimposition unit 1248.
  • the OFDM demodulation unit 1240 demodulates the terrestrial digital broadcast wave received by the receiving antenna by OFDM (Orthogonal Frequency Division Multiplexing).
  • OFDM is a type of digital signal modulation method, and is a multi-carrier modulation method in which data is divided into a plurality of carrier waves called subcarriers and transmitted in parallel in the frequency direction.
  • each subcarrier orthogonal shifting the phase of the wave by 90 degrees
  • the error correction unit 1242 outputs the processed TS (Transport Stream) data that decodes the error correction code.
  • Error correction is a process of restoring data by correcting data errors caused by noise or interference generated in a transmission line on the receiving side.
  • RS code Reed-Solomon code
  • convolutional code In terrestrial digital broadcasting, double error correction of Reed-Solomon code (RS code) and convolutional code is performed.
  • the error correction unit 1242 corrects errors in the order of decoding the convolutional code (Vitterbi decoding) and Reed-Solomon decoding.
  • the multiplex separation unit 1244 separates the data according to the purpose.
  • the MPEG decoding unit 1246 performs MPEG decoding and decodes the video signal and the audio signal. If it is data broadcasting data, it is sent to the CPU.
  • the image superimposing unit 1248 superimposes the subtitles processed by the CPU, the image of data broadcasting, etc. on the MPEG-decoded video signal.
  • the video signal on which images and the like are superimposed is output to the system I / F 2180 of the display device unit 210.
  • the reception demodulation unit 124 may include an OFDM demodulation LSI (Large Scale Integrated circuit) to execute OFDM demodulation.
  • OFDM demodulation LSI Large Scale Integrated circuit
  • FIG. 3 is a diagram showing a configuration example of the reception quality detection unit of the present disclosure.
  • the reception quality detection unit 126 includes a BER detection unit 1260, a MER detection unit 1262, and a C / N detection unit 1264.
  • the BER detection unit 1260 determines the error bit rate (BER) obtained from the bit string obtained by demodulation (bit string before error correction) and the bit string obtained by performing error correction on the bit string (bit string after error correction). calculate.
  • the MER detection unit 1262 demodulates the modulation error ratio (MER) by the square of the distance from the origin of the constellation diagram to the ideal symbol position (I, Q) with the actual symbol position (Ia, Ib) ideal.
  • the error vector ( ⁇ I, ⁇ Q) (I-Ia, I-Ib) squared (the average of n measurements), which is the difference from the symbol position (I, Q), is divided by the following. Calculate using the formula.
  • MER 10Log ((I ⁇ 2 + Q ⁇ 2) / (1 / n) ⁇ ((I-Ia) ⁇ 2 + (Q-Qa) ⁇ 2)).
  • the MER can be used as a quality index of a digitally modulated signal.
  • the C / N detection unit 1264 calculates the carrier power to noise power ratio (C / N) from the carrier power Pc and the noise power Pn using the following equation.
  • C / N 10Log (Pc / Pn).
  • the carrier power to noise power ratio (C / N) is a ratio of noise (noise) contained in a signal (Carria: carrier), and represents the quality of the received digitally modulated signal.
  • the user interface unit 200 includes a display device unit 210, an acoustic output unit 220, a vibration motor unit 230, and an input unit 240.
  • FIG. 4 is a diagram showing a configuration example of the display device unit of the present disclosure.
  • the display device unit 210 includes a display panel unit 212, a gate drive circuit unit 214, a data line drive circuit unit 216, and a display device control circuit unit 218.
  • a plurality of pixel circuits 2120 are arranged in a matrix on the display panel unit 212.
  • the pixel circuit 2120 is an electronic circuit including an organic EL (Electro Luminescence) element as a light emitting element and a circuit element for driving the light emitting element to emit light.
  • organic EL Electro Luminescence
  • the light emitting element of the organic EL constitutes a light emitting diode (Light-Emitting Diode) in which the light emitting layer is made of an organic compound, and excitons generated by recombination of electrons and holes injected into the organic compound. Lights up by.
  • the term of organic EL also refers to a product called an organic light-emitting diode (OLED) and a light emitting polymer (Light Emitting Polymer: LEP).
  • OLED organic light-emitting diode
  • LEP Light Emitting Polymer
  • the display device control circuit unit 218 includes a system I / F 2180, a timing generator 2182, and an oscillator 2184.
  • the system I / F 2180 receives a video signal and a control signal from the reception demodulation unit 124, expands the received video signal into the storage unit 400, and supplies the control signal to the timing generator 2182.
  • the timing generator 2182 controls the timing of the storage unit 400, the gate drive circuit unit 214, and the data line drive circuit unit 216 according to the control signal. That is, the timing generator 2182 supplies a control signal (synchronous signal) to the gate drive circuit unit 214 and the data line drive circuit unit 216 based on the input control signal, and displays the display start timing of each pixel circuit and the display. Control the period.
  • Oscillator 2184 generates an internal clock signal.
  • the oscillator 2184 may include a component that causes natural vibration in the circuit by applying a voltage such as a crystal oscillator or a ceramic oscillator, and may transmit an internal clock signal.
  • the internal clock signal generated by the oscillator 2184 is supplied to the timing generator 2182 and used for timing control.
  • the display device control circuit unit 218 performs predetermined signal processing on the video signal input to the system I / F 2180, and generates a gradation signal corresponding to the light emission brightness of the light emitting element based on the input video signal. Then, the generated gradation signal is output to the data line drive circuit unit 216. Further, the display device control circuit unit 218 generates a control signal for controlling the gate drive circuit unit 214 based on the input control signal, and the generated control signal is used for the data line drive circuit unit 216 and the gate drive. Output to the circuit unit 214.
  • the data line drive circuit unit 216 drives the data line of the display panel unit 212 based on the gradation signal generated by the display device control circuit unit 218. Specifically, the data line drive circuit unit 216 outputs a video signal voltage (data voltage) reflecting the gradation signal to each pixel circuit 2120 based on the gradation signal and the control signal (horizontal synchronization signal). ..
  • the gate drive circuit unit 214 drives the scanning line of the display panel unit 212 based on the control signal generated by the display device control circuit unit 218. Specifically, the gate drive circuit unit 214 outputs a scanning signal or the like to each pixel circuit 2120 based on the control signals (vertical synchronization signal and horizontal synchronization signal) at least in units of display lines.
  • the control signal output by the display device control circuit unit 218 is high frequency, and high frequency noise affecting each communication unit (mobile communication unit 110, terrestrial digital broadcasting communication unit 120) of the wireless communication unit 100 from the transmission line. To radiate. Further, frequency-dependent harmonic noise is also radiated between the transmission lines of the display device control circuit unit 218, the data line drive circuit unit 216, and the gate drive circuit unit 214. Therefore, when the frequency of the harmonic noise matches the reception frequency band of the wireless communication unit 100, the reception sensitivity is lowered.
  • the sound output unit 220 includes a speaker and outputs sound.
  • the vibration motor unit 230 includes a motor and generates vibration according to a predetermined vibration pattern.
  • the input unit 240 includes a touch panel, operation buttons, and the like, and accepts user operations.
  • the control unit 300 controls the entire information processing apparatus 10.
  • the control unit 300 includes a reception level determination unit 310 and a frequency change circuit unit 320.
  • the control unit 300 may include a CPU (Central Processing Unit) and realize the functions of the reception level determination unit 310 and the frequency change circuit unit 320. That is, the CPU may execute the function of the control unit 300 by executing the program stored in the ROM included in the storage unit 400 described later and using the RAM for the data work area.
  • a CPU Central Processing Unit
  • the reception level determination unit 310 determines the reception level of the terrestrial digital broadcast wave received by the terrestrial digital broadcast communication unit 120. After the reception demodulation unit 124 included in the terrestrial digital broadcasting communication unit 120 demodulates the radio wave of the terrestrial digital broadcasting, the reception level determination unit 310 has a bit error rate (BER), a modulation error ratio (MER), and a carrier power to noise power ratio. Using the result of measuring (C / N), the reception level of the radio wave of the terrestrial digital broadcast is determined.
  • BER bit error rate
  • MER modulation error ratio
  • C / N carrier power to noise power ratio
  • the frequency change circuit unit 320 changes the output frequency of the oscillator 2184 included in the display device control circuit unit 218 based on the determination result of the reception level determination unit 310. That is, when the reception level determination unit 310 determines that the reception state is poor, the frequency change circuit unit 320 causes the multiplied wave of the output frequency of the oscillator 2184 to be a value outside the frequency band range of the reception channel of the terrestrial digital broadcast. The output frequency of the oscillator 2184 is changed so as to be.
  • FIG. 5 is a diagram showing a configuration example of the frequency changing circuit unit of the present disclosure.
  • the frequency change circuit unit 320 is a PLL circuit, and includes a switch 3200, a 1 / R divider 3202, a phase comparator 3204, a voltage control oscillation circuit 3206, and a 1 / N variable divider 3208. ..
  • the switch 3200 switches whether the output frequency of the oscillator 2184 is supplied to the timing generator 2182 via the frequency change circuit unit 320 or is directly supplied to the timing generator 2182.
  • a single pole double throw type switch can be used as the switch 3200.
  • the 1 / R divider 3202 divides the output frequency fr input from the oscillator 2184, outputs the frequency fr / R, and inputs the output frequency fr to the phase comparator 3204.
  • the output frequency fout of the frequency change circuit unit 320 is supplied to the timing generator 2182 and to the 1 / N variable divider 3208 as well as the output from the voltage control oscillation circuit 3206.
  • a frequency division ratio setting signal from the CPU is input to the 1 / N variable frequency divider 3208, and the output frequency fout of the frequency change circuit unit 320 is set to the frequency division ratio N set by the frequency division ratio setting signal. It is divided into frequency / N, forms a loop, and is input to the other comparison input of the phase comparator 3204.
  • the phase comparator 3204 compares the frequency fr / R obtained by dividing the output frequency fr of the oscillator 2184 with the frequency fout / N obtained by dividing the output frequency by the frequency dividing ratio N set by the CPU. The phase difference is output as a voltage to the voltage control oscillation circuit 3206.
  • the voltage control oscillation circuit 3206 is an oscillation circuit that controls the oscillation frequency with a voltage (control voltage).
  • the voltage control oscillation circuit 3206 determines the output frequency fout based on the output voltage of the phase comparator 3204, and outputs the output frequency fout.
  • the output frequency fout is input to the 1 / N variable frequency divider 3208, divided into fout / N at the division ratio N, looped, and input to the other comparison input of the phase comparator 3204.
  • a voltage indicating the phase difference is input to the voltage control oscillation circuit 3206.
  • fr / R and fout / N are controlled so as to always have the same frequency. That is, the output frequency fout of the frequency changing circuit unit 320 can be controlled in fr / R units by the frequency division ratio setting signal from the CPU, and a fine output frequency can be set by increasing R. Is.
  • the storage unit 400 is a storage device for various information such as calculation contents and programs of the control unit 300.
  • the storage unit 400 includes a modified frequency storage unit 410.
  • the storage unit 400 stores the frequency band for each channel of terrestrial digital broadcasting.
  • the storage unit 400 includes, for example, a RAM (Random Access Memory), a main storage device such as a ROM (Read Only Memory), and an external storage device such as an HDD (Hard Disk Drive) and an SSD (Solid State Drive). , Including at least one.
  • the frequency storage unit 410 calculates in advance the frequency at which the harmonic component of the output frequency of the oscillator 2184 does not interfere with the reception frequency band of the receiving channel, and the difference from the output frequency of the oscillator 2184 is as small as possible. Then, it is stored in the storage unit 400.
  • the output frequency of the changed oscillator 2184 stored in the changed frequency storage unit 410 will be described.
  • As the frequency band of terrestrial digital broadcasting 470 MHz to 710 MHz (Ch.13 to Ch.52) are assigned.
  • the frequency width of the occupied band for each channel is 5.57 MHz.
  • the output frequency of the oscillator 2184 is X
  • the frequency nX obtained by multiplying the output frequency of the oscillator 2184 by n is included in the occupied band of the receiving channel. Since the frequency width of the occupied band for each channel is 5.57 MHz, the n-multiplied frequency is changed to a value outside the occupied band of the receiving channel by changing the n-multiplied frequency nX at a maximum of 2.785 MHz.
  • the fundamental frequency X may be increased or decreased by 1 / n ⁇ 2.785 MHz.
  • the frequency storage unit 410 after the change stores the frequency of the oscillator 2184 after the change calculated by the above method.
  • the information processing apparatus 10 changes the output frequency of the oscillator 2184 according to the reception level of terrestrial digital broadcasting. Therefore, the reception level determination unit 310 determines the reception state of the terrestrial digital broadcast, and the frequency change circuit unit 320 changes the output frequency of the oscillator 2184 based on the determination result of the reception level determination unit 310.
  • FIG. 6 is a flowchart illustrating a determination procedure of the reception level determination unit of the present disclosure.
  • the determination flow of the reception level determination unit 310 will be described with reference to FIG.
  • the broadcast signal of the terrestrial digital broadcast received by the receiving antenna unit 122 is selected for each broadcast channel (step S100).
  • the carrier power-to-noise power ratio (C / N), modulation error ratio (MER), and bit error rate (BER) of the selected broadcast signal are acquired (step S102). It is determined whether the acquired carrier power to noise power ratio (C / N) is equal to or higher than a preset abnormality determination value (for example, 25 dB) (step S104).
  • a preset abnormality determination value for example, 25 dB
  • the modulation error ratio (MER) is preset. It is determined whether or not it is an abnormality determination value (for example, 22 dB) or more (step S106). When it is determined that the modulation error ratio (MER) is equal to or greater than the abnormality determination value (for example, 22 dB) (step S106; Yes), the bit error rate (BER) is equal to or less than the abnormality determination value (for example, 2.00E-4). (Step S108). If the bit error rate (BER) is equal to or less than the abnormality determination value (for example, 2.00E-4) (step S108; Yes), it is determined that the reception state is normal (step S110).
  • a preset abnormality determination value for example, 25 dB
  • step S104 When it is determined in step S104 that the carrier power to noise power ratio (C / N) is less than a preset abnormality determination value (for example, 25 dB) (step S104; No), the reception level determination unit 310 It is determined that the reception state is poor (step S112). If it is determined in step S106 that the modulation error ratio (MER) is less than a preset determination value (for example, 22 dB) for abnormality determination, the reception level determination unit 310 determines that the reception status is poor (for example, 22 dB). Step S112). If it is determined in step S108 that the bit error rate (BER) is less than a preset determination value (for example, 2.00E-4) for abnormality determination, the reception level determination unit 310 has a poor reception condition. (Step S112).
  • BER bit error rate
  • the frequency change circuit unit 320 changes the output frequency of the oscillator 2184.
  • FIG. 7 is a flowchart illustrating the operation of the frequency changing circuit unit of the present disclosure.
  • the processing of the frequency changing circuit unit 320 will be described with reference to FIG. 7.
  • the determination result of the reception level determination unit 310 is acquired, and it is determined whether the reception state is defective (step S200).
  • the frequency change circuit unit 320 confirms the reception channel of the terrestrial digital broadcast (step S202). After confirming the receiving channel, the frequency band used by the confirmed receiving channel is acquired from the storage unit 400 (step S204).
  • the output frequency of the changed oscillator 2184 according to the frequency band to be used is acquired from the storage unit 400 (step S206).
  • the division ratio N of the 1 / N variable divider 3208 is obtained from the division ratio R of the 1 / R divider 3202 and the output frequency fout of the changed oscillator 2184. Is calculated (step S208).
  • the division ratio N is input to the 1 / N variable divider 3208 (step S210).
  • the switch 3200 is switched so that the output of the oscillator 2184 is input to the frequency change circuit unit 320 (step S212).
  • step S200 When the determination result of the reception level determination unit 310 acquired in step S200 is that the reception state is good (step S200; No), the frequency change circuit unit 320 ends the process.
  • the frequency change circuit unit 320 changes the output frequency of the oscillator 2184.
  • the frequency change circuit unit 320 increases the output frequency of the oscillator 2184 by 1%, the output frequency of the oscillator 2184 becomes 105 MHz, the frequency multiplied by 5 becomes 525 MHz, and the frequency multiplied by 6 becomes 630 MHz. Therefore, since the frequency 6 times the output frequency of the oscillator 2184 is a value outside the range of the 38ch frequency band of terrestrial digital broadcasting, it is possible to prevent a decrease in reception sensitivity.
  • the present technology can also have the following configurations.
  • (1) The frequency of the wireless communication unit that receives terrestrial digital broadcasting, the transmission device that transmits radio waves, and the transmission device that does not affect the frequency band used by the wireless communication unit for wireless communication is stored in advance. Based on the stored storage unit, the terrestrial digital broadcast used by the wireless communication unit, and the data stored in the storage unit, the transmitting device is noisy with respect to the frequency band used by the wireless communication unit for wireless communication.
  • An information processing device including a control unit that operates at the frequency of the transmitting device that does not affect the transmission device.
  • the wireless communication unit is a reception demodulation unit that receives and demodulates terrestrial digital broadcast waves, and a carrier power to noise power ratio (C / N), a modulation error ratio (MER), and bits from the received demodulated signal.
  • the reception quality detection unit includes a reception quality detection unit that detects an error rate (BER), and the reception quality detection unit includes the carrier wave power to noise power ratio (C / N), the modulation error ratio (MER), and the above.
  • the bit error rate (BER) is used to determine the reception level, and the control unit determines whether or not to change the frequency of the transmitting device based on the determination result of the reception level. ).
  • Information processing device is used to determine the reception level, and the control unit determines whether or not to change the frequency of the transmitting device based on the determination result of the reception level. ).
  • a display device for displaying a video signal is provided, the transmitting device is an oscillator of the display device, and the control unit includes the output frequency of the oscillator in the frequency stored in the storage unit.
  • the output frequency of the changed oscillator stored in the storage unit is the first output frequency which means the output frequency before the change of the oscillator and the second output which means the output frequency after the change of the oscillator.
  • the information processing apparatus according to (3) or (4) above, wherein the difference from the frequency is 1% or more and 2% or less with respect to the first output frequency.
  • a control method for an information processing apparatus including a step of determining a reception state and a step of changing the frequency of the transmitting device to a preset frequency when the reception state is determined to be poor.
  • Information processing device 100 Wireless communication section 110 Mobile communication section 120 Terrestrial digital broadcasting communication section 122 Reception antenna section 124 Reception demodulation section 200 User interface section 210 Display device section 220 Acoustic output section 230 Vibration motor section 240 Input section 300 Control section 310 Reception Level determination unit 320 Frequency change circuit unit 400 Storage unit 410 Change frequency storage unit

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Abstract

This information processing device comprises: a radio communication unit which receives terrestrial digital broadcasts; a transmission device which transmits a radio wave; a storage unit which stores a frequency of the transmission device that does not exert a noise influence on a frequency band to be used in radio communication by the radio communication unit; and a control unit which operates the transmission device at the frequency of the transmission device, which does not exert the noise influence on the frequency band used in radio communication by the radio communication, on the basis of the terrestrial digital broadcast used by the radio communication unit and data stored in the storage unit.

Description

情報処理装置、プログラム、及び制御方法Information processing equipment, programs, and control methods
　本開示は、情報処理装置、プログラム、及び制御方法に関する。 This disclosure relates to an information processing device, a program, and a control method.
　情報処理装置は、通信用の電波を送受信する機器だけでなく、駆動時に電波が発信される機器が含まれる場合がある。発信される電波の周波数が重なると、一方の機器が他方の機器のノイズ源となる。このようなノイズ源の影響に対応する装置としては、ノイズ源の伝搬経路に対して、バイパスフィルターなどの対策部品を実装することで、ノイズ源となるデバイスの動作クロックの周波数の逓倍波に対して、地上デジタルテレビ放送受信時の感度劣化を抑制する装置がある。また、ノイズ源からの電波を抑制するためにノイズ源となるデバイスに対して、金属箔のカバーを被せることで、ノイズ源からの電波の漏洩を抑制する装置がある（特許文献１参照）。 The information processing device may include not only a device that transmits and receives radio waves for communication but also a device that transmits radio waves during driving. When the frequencies of the transmitted radio waves overlap, one device becomes a noise source for the other device. As a device that copes with the influence of such a noise source, by mounting a countermeasure component such as a bypass filter on the propagation path of the noise source, the frequency of the operating clock of the device that becomes the noise source is multiplied. There is a device that suppresses sensitivity deterioration when receiving terrestrial digital television broadcasts. Further, there is a device that suppresses leakage of radio waves from a noise source by covering a device that becomes a noise source with a metal leaf cover in order to suppress radio waves from the noise source (see Patent Document 1).
特開２００９－２９５６７１号公報Japanese Unexamined Patent Publication No. 2009-295671
　しかしながら、携帯電話機などの無線通信を行う装置では、装置の小型化に伴いノイズ源とアンテナが近接し、アンテナの信号に不要ノイズが加わる傾向がある。また、携帯電話機などの電子機器は、薄型化や小型化に伴って対策部品を配置できる箇所を確保することが困難な場合がある。 However, in a device that performs wireless communication such as a mobile phone, the noise source and the antenna tend to be close to each other due to the miniaturization of the device, and unnecessary noise tends to be added to the signal of the antenna. Further, in electronic devices such as mobile phones, it may be difficult to secure a place where countermeasure parts can be arranged due to the thinning and miniaturization.
　そこで、本開示では、ノイズ源が存在する場合であっても、受信感度の低下を発生させることなく、地上デジタル放送を受信可能とする情報処理装置、プログラム、及び制御方法を提案する。 Therefore, the present disclosure proposes an information processing device, a program, and a control method that enable reception of terrestrial digital broadcasting without causing a decrease in reception sensitivity even in the presence of a noise source.
　本開示によれば、地上デジタル放送を受信する無線通信部と、電波を発信する発信デバイスと、前記無線通信部が無線通信に使用する周波数帯域に対してノイズ影響を与えない前記発信デバイスの周波数が予め記憶された記憶部と、前記無線通信部で使用する地上デジタル放送と前記記憶部に記憶されるデータに基づいて、前記発信デバイスを、前記無線通信部が無線通信に使用する周波数帯域に対してノイズ影響を与えない前記発信デバイスの周波数で動作させる制御部と、を備える情報処理装置が提供される。 According to the present disclosure, the frequency of the wireless communication unit that receives terrestrial digital broadcasting, the transmission device that transmits radio waves, and the transmission device that does not affect the frequency band used by the wireless communication unit for wireless communication. Based on the storage unit stored in advance, the terrestrial digital broadcasting used in the wireless communication unit, and the data stored in the storage unit, the transmitting device is set to the frequency band used by the wireless communication unit for wireless communication. On the other hand, an information processing apparatus including a control unit that operates at the frequency of the transmitting device that does not affect noise is provided.
　また、本開示によれば、前記無線通信部が受信する地上デジタル放送の放送信号をチャンネル毎に選局するステップと、選局された地上デジタル放送のチャンネルの周波数帯域を特定するステップと、前記地上デジタル放送を受信復調して、受信状態の判定を行うステップと、受信状態不良と判定された場合に、前記発信デバイスの周波数を予め設定された周波数に変更するステップと、をコンピューターに実行させるプログラムが提供される。 Further, according to the present disclosure, a step of selecting a broadcast signal of terrestrial digital broadcasting received by the wireless communication unit for each channel, a step of specifying a frequency band of the selected terrestrial digital broadcasting channel, and the above-mentioned. Have the computer execute a step of receiving and demolishing the terrestrial digital broadcast to determine the reception status, and a step of changing the frequency of the transmitting device to a preset frequency when the reception status is determined to be poor. The program is offered.
　また、本開示によれば、前記無線通信部が受信する地上デジタル放送の放送信号をチャンネル毎に選局するステップと、選局された地上デジタル放送のチャンネルの周波数帯域を特定するステップと、前記地上デジタル放送を受信復調して、受信状態の判定を行うステップと、受信状態不良と判定された場合に、前記発信デバイスの周波数を予め設定された周波数に変更するステップと、を含む前記情報処理装置の制御方法が提供される。 Further, according to the present disclosure, a step of selecting a broadcast signal of terrestrial digital broadcasting received by the wireless communication unit for each channel, a step of specifying a frequency band of the selected terrestrial digital broadcasting channel, and the above-mentioned. The information processing including a step of receiving and demodulating a terrestrial digital broadcast to determine the reception state, and a step of changing the frequency of the transmitting device to a preset frequency when the reception state is determined to be poor. A method of controlling the device is provided.
本開示の本実施形態に係る情報処理装置の構成例を示す図である。It is a figure which shows the structural example of the information processing apparatus which concerns on this Embodiment of this disclosure. 本開示の地上デジタル放送受信部の構成例を示す図である。It is a figure which shows the structural example of the terrestrial digital broadcasting receiving part of this disclosure. 本開示の受信品質検出部の構成例を示す図である。It is a figure which shows the structural example of the reception quality detection part of this disclosure. 本開示の表示装置部の構成例を示す図である。It is a figure which shows the structural example of the display device part of this disclosure. 本開示の周波数変更回路部の構成例を示す図である。It is a figure which shows the structural example of the frequency change circuit part of this disclosure. 本開示の受信レベル判定部の判定手順を説明するフローチャートである。It is a flowchart explaining the determination procedure of the reception level determination unit of this disclosure. 本開示の周波数変更回路部の作用を説明するフローチャートである。It is a flowchart explaining the operation of the frequency change circuit part of this disclosure.
　以下に、本開示の実施形態について図面に基づいて詳細に説明する。なお、以下の各実施形態において、同一の部位には同一の符号を付することにより重複する説明を省略する。 Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In each of the following embodiments, the same parts are designated by the same reference numerals, so that overlapping description will be omitted.
（本実施形態）
　図１は、本開示の本実施形態に係る情報処理装置の構成例を示す図である。 (The present embodiment)
FIG. 1 is a diagram showing a configuration example of an information processing apparatus according to the present embodiment of the present disclosure.
　情報処理装置１０は、例えば、スマートフォン等の携帯電話、タブレット端末、ノートパソコン、テレビである。図１に示す情報処理装置１０は、無線通信部１００と、ユーザーインターフェース部２００と、制御部３００と、記憶部４００と、を含む。 The information processing device 10 is, for example, a mobile phone such as a smartphone, a tablet terminal, a notebook computer, or a television. The information processing device 10 shown in FIG. 1 includes a wireless communication unit 100, a user interface unit 200, a control unit 300, and a storage unit 400.
（無線通信部）
　無線通信部１００は、各種の無線周波数帯を用いた無線通信を行う。図１に示すように、無線通信部１００は、携帯電話網を介してデータを送受信する移動通信部１１０（８００ＭＨｚ帯域、２ＧＨｚ帯域など）と、地上デジタル放送（ＤＴＶ）を受信する地上デジタル放送通信部１２０と、を含む。 (Wireless communication unit)
The wireless communication unit 100 performs wireless communication using various radio frequency bands. As shown in FIG. 1, the wireless communication unit 100 includes a mobile communication unit 110 (800 MHz band, 2 GHz band, etc.) for transmitting and receiving data via a mobile phone network, and terrestrial digital broadcasting communication for receiving terrestrial digital broadcasting (DTV). A part 120 and the like.
　図２は、本開示の地上デジタル放送受信部の構成例を示す図である。図２に示すように、地上デジタル放送通信部１２０は、受信アンテナ部１２２と、受信復調部１２４と、受信品質検出部１２６と、を備える。受信アンテナ部１２２は、地上デジタル放送波を受信する。受信アンテナ部１２２は、アンテナを備え、アンテナの長さは地上デジタル放送の放送信号の約１／４波長の長さに形成してよい。 FIG. 2 is a diagram showing a configuration example of the terrestrial digital broadcast receiving unit of the present disclosure. As shown in FIG. 2, the terrestrial digital broadcasting communication unit 120 includes a reception antenna unit 122, a reception demodulation unit 124, and a reception quality detection unit 126. The receiving antenna unit 122 receives the terrestrial digital broadcast wave. The receiving antenna unit 122 includes an antenna, and the length of the antenna may be formed to be about 1/4 wavelength of the broadcast signal of terrestrial digital broadcasting.
　受信復調部１２４は、ＯＦＤＭ復調部１２４０と、誤り訂正部１２４２と、多重分離部１２４４と、ＭＰＥＧデコード部１２４６と、画像重畳部１２４８と、を備える。 The reception demodulation unit 124 includes an OFDM demodulation unit 1240, an error correction unit 1242, a multiple separation unit 1244, an MPEG decoding unit 1246, and an image superimposition unit 1248.
　ＯＦＤＭ復調部１２４０は、受信アンテナで受信した地上デジタル放送波をＯＦＤＭ（Ｏｒｔｈｏｇｏｎａｌ　Ｆｒｅｑｕｅｎｃｙ　Ｄｉｖｉｓｉｏｎ　Ｍｕｌｔｉｐｌｅｘｉｎｇ：直交周波数分割多重）復調する。なお、ＯＦＤＭとはデジタル信号の変調方式の一種であり、データをサブキャリアと呼ばれる複数の搬送波に分割し、周波数方向に並列に送信するマルチキャリア変調方式である。各サブキャリアを直交させる（波の位相を９０度ずらす）ことで、サブキャリア間の間隔を密に配置し、限られた周波数帯域の有効利用、マルチパスや干渉波の影響を少なくすることができる。 The OFDM demodulation unit 1240 demodulates the terrestrial digital broadcast wave received by the receiving antenna by OFDM (Orthogonal Frequency Division Multiplexing). Note that OFDM is a type of digital signal modulation method, and is a multi-carrier modulation method in which data is divided into a plurality of carrier waves called subcarriers and transmitted in parallel in the frequency direction. By making each subcarrier orthogonal (shifting the phase of the wave by 90 degrees), it is possible to arrange the intervals between the subcarriers closely, effectively use the limited frequency band, and reduce the influence of multipath and interference waves. can.
　誤り訂正部１２４２は、誤り訂正符号の復号を行う、処理後のＴＳ（Ｔｒａｎｓｐｏｒｔ　Ｓｔｒｅａｍ）データを出力する。誤り訂正とは、伝送路で発生する雑音や干渉などによるデータ誤りを受信側で訂正することで、データを元に戻す処理である。地上デジタル放送では、リードソロモン符号（ＲＳ符号）と、畳み込み符号という二重の誤り訂正を行う。誤り訂正部１２４２は、畳み込み符号の復号（ビタビ復号）、リードソロモン復号の順に誤り訂正を行う。 The error correction unit 1242 outputs the processed TS (Transport Stream) data that decodes the error correction code. Error correction is a process of restoring data by correcting data errors caused by noise or interference generated in a transmission line on the receiving side. In terrestrial digital broadcasting, double error correction of Reed-Solomon code (RS code) and convolutional code is performed. The error correction unit 1242 corrects errors in the order of decoding the convolutional code (Vitterbi decoding) and Reed-Solomon decoding.
　多重分離部１２４４は、誤り訂正部１２４２が出力したＴＳデータに、複数の映像・音声データ、および、データ放送が含まれている場合は、目的別に分離する。 If the TS data output by the error correction unit 1242 includes a plurality of video / audio data and data broadcasting, the multiplex separation unit 1244 separates the data according to the purpose.
　ＭＰＥＧデコード部１２４６は、多重分離部１２４４が分離したデータが、映像・音声データであれば、ＭＰＥＧデコードを行い映像信号と音声信号を復号する。データ放送のデータであれば、ＣＰＵに送り処理が行われる。 If the data separated by the multiplex separation unit 1244 is video / audio data, the MPEG decoding unit 1246 performs MPEG decoding and decodes the video signal and the audio signal. If it is data broadcasting data, it is sent to the CPU.
　画像重畳部１２４８は、ＭＰＥＧデコードされた映像信号に、ＣＰＵで処理された字幕やデータ放送の画像などを重ね合わせる。画像などが重ね合わされた映像信号は、表示装置部２１０のシステムＩ／Ｆ２１８０に出力される。 The image superimposing unit 1248 superimposes the subtitles processed by the CPU, the image of data broadcasting, etc. on the MPEG-decoded video signal. The video signal on which images and the like are superimposed is output to the system I / F 2180 of the display device unit 210.
　なお、受信復調部１２４は、ＯＦＤＭ復調ＬＳＩ（Ｌａｒｇｅ　Ｓｃａｌｅ　Ｉｎｔｅｇｒａｔｅｄ　ｃｉｒｃｕｉｔ）を備えて、ＯＦＤＭ復調を実行してよい。 The reception demodulation unit 124 may include an OFDM demodulation LSI (Large Scale Integrated circuit) to execute OFDM demodulation.
　図３は、本開示の受信品質検出部の構成例を示す図である。図３に示すように、受信品質検出部１２６は、ＢＥＲ検出部１２６０、ＭＥＲ検出部１２６２、Ｃ／Ｎ検出部１２６４を備える。 FIG. 3 is a diagram showing a configuration example of the reception quality detection unit of the present disclosure. As shown in FIG. 3, the reception quality detection unit 126 includes a BER detection unit 1260, a MER detection unit 1262, and a C / N detection unit 1264.
　ＢＥＲ検出部１２６０は、復調によって得られたビット列（誤り訂正前のビット列）、および、当該ビット列に対して誤り訂正を行ったビット列（誤り訂正後のビット列）から得られる誤りビット率（ＢＥＲ）を算出する。誤りビット率（ＢＥＲ）とは、復調した１、０のデジタル信号の誤りビット数を一定期間カウントし、一定期間内の全ビット数に占める誤りビット数の割合を表したものである。ＢＥＲは次の式で表される。（ＢＥＲ）＝（誤りビット数）／（伝送ビット数）。 The BER detection unit 1260 determines the error bit rate (BER) obtained from the bit string obtained by demodulation (bit string before error correction) and the bit string obtained by performing error correction on the bit string (bit string after error correction). calculate. The error bit rate (BER) is the ratio of the number of error bits to the total number of bits within a certain period by counting the number of error bits of the demodulated 1 and 0 digital signals for a certain period. BER is expressed by the following equation. (BER) = (number of error bits) / (number of transmission bits).
　ＭＥＲ検出部１２６２は、変調誤差比（ＭＥＲ）をコンスタレーション図の原点から理想的なシンボル位置（Ｉ、Ｑ）までの距離の２乗を、復調した実際のシンボル位置（Ｉａ、Ｉｂ）と理想的なシンボル位置（Ｉ、Ｑ）との差であるエラーベクトル（δＩ、δＱ）＝（Ｉ－Ｉａ、Ｉ－Ｉｂ）の２乗（ｎ回の測定の平均）で割ったものとして、次の式を用いて算出する。ＭＥＲ＝１０Ｌｏｇ（（Ｉ＾２＋Ｑ＾２）／（１／ｎ）Σ（（Ｉ－Ｉａ）＾２＋（Ｑ－Ｑａ）＾２））。ＭＥＲは、デジタル変調信号の品質指標として用いることができる。 The MER detection unit 1262 demodulates the modulation error ratio (MER) by the square of the distance from the origin of the constellation diagram to the ideal symbol position (I, Q) with the actual symbol position (Ia, Ib) ideal. The error vector (δI, δQ) = (I-Ia, I-Ib) squared (the average of n measurements), which is the difference from the symbol position (I, Q), is divided by the following. Calculate using the formula. MER = 10Log ((I ^ 2 + Q ^ 2) / (1 / n) Σ ((I-Ia) ^ 2 + (Q-Qa) ^ 2)). The MER can be used as a quality index of a digitally modulated signal.
　Ｃ／Ｎ検出部１２６４は、搬送波電力Ｐｃと雑音電力Ｐｎから搬送波電力対雑音電力比（Ｃ／Ｎ）を次の式を用いて算出する。Ｃ／Ｎ＝１０Ｌｏｇ（Ｐｃ／Ｐｎ）。搬送波電力対雑音電力比（Ｃ／Ｎ）は、信号（Ｃａｒｒｉａ：キャリア）に含まれる雑音（Ｎｏｉｚｅ：ノイズ）の比率であり、受信したデジタル変調信号の品質を表す。 The C / N detection unit 1264 calculates the carrier power to noise power ratio (C / N) from the carrier power Pc and the noise power Pn using the following equation. C / N = 10Log (Pc / Pn). The carrier power to noise power ratio (C / N) is a ratio of noise (noise) contained in a signal (Carria: carrier), and represents the quality of the received digitally modulated signal.
（ユーザーインターフェース部）
　ユーザーインターフェース部２００は、表示装置部２１０と、音響出力部２２０と、振動モータ部２３０と、入力部２４０と、を備える。 (User interface section)
The user interface unit 200 includes a display device unit 210, an acoustic output unit 220, a vibration motor unit 230, and an input unit 240.
　図４は、本開示の表示装置部の構成例を示す図である。図４に示すように、表示装置部２１０は、表示パネル部２１２と、ゲート駆動回路部２１４と、データ線駆動回路部２１６と、表示装置制御回路部２１８と、を含む。表示パネル部２１２には、複数の画素回路２１２０が行列上に配置されている。画素回路２１２０は、発光素子として有機ＥＬ（Ｅｌｅｃｔｏｒｏ　Ｌｕｍｉｎｅｓｃｅｎｃｅ）素子を用いて、発光素子を発光駆動させるための回路素子を備える電子回路である。有機ＥＬの発光素子は、発光層が有機化合物からなる発光ダイオード（Ｌｉｇｈｔ－Ｅｍｉｔｔｉｎｇ　Ｄｉｏｄｅ）を構成しており、有機化合物中に注入された電子と正孔の再結合によって生じた励起子（エキシトン）によって発光する。なお、有機ＥＬの用語は、有機発光ダイオード（Ｏｒｇａｎｉｃ　Ｌｉｇｈｔ－Ｅｍｉｔｔｉｎｇ　Ｄｉｏｄｅ：ＯＬＥＤ）、発光ポリマー（Ｌｉｇｈｔ　Ｅｍｉｔｔｉｎｇ　Ｐｏｌｙｍｅｒ：ＬＥＰ）と呼ぶ製品も指す。表示パネル部２１２に、有機ＥＬ素子を発光素子として用いた画素回路２１２０を形成することによって、動画を表示する際の応答速度を早めることができることから、画質を向上させることができる。なお、表示パネル部２１２には、有機ＥＬパネルの他に、液晶パネルを用いることができる。 FIG. 4 is a diagram showing a configuration example of the display device unit of the present disclosure. As shown in FIG. 4, the display device unit 210 includes a display panel unit 212, a gate drive circuit unit 214, a data line drive circuit unit 216, and a display device control circuit unit 218. A plurality of pixel circuits 2120 are arranged in a matrix on the display panel unit 212. The pixel circuit 2120 is an electronic circuit including an organic EL (Electro Luminescence) element as a light emitting element and a circuit element for driving the light emitting element to emit light. The light emitting element of the organic EL constitutes a light emitting diode (Light-Emitting Diode) in which the light emitting layer is made of an organic compound, and excitons generated by recombination of electrons and holes injected into the organic compound. Lights up by. In addition, the term of organic EL also refers to a product called an organic light-emitting diode (OLED) and a light emitting polymer (Light Emitting Polymer: LEP). By forming the pixel circuit 2120 using the organic EL element as the light emitting element in the display panel unit 212, the response speed when displaying a moving image can be increased, so that the image quality can be improved. In addition to the organic EL panel, a liquid crystal panel can be used for the display panel unit 212.
　表示装置制御回路部２１８は、システムＩ／Ｆ２１８０と、タイミングジェネレータ２１８２と、オシレータ２１８４と、を備える。 The display device control circuit unit 218 includes a system I / F 2180, a timing generator 2182, and an oscillator 2184.
　システムＩ／Ｆ２１８０は、受信復調部１２４から映像信号、制御信号を受け取り、受け取った映像信号を記憶部４００に展開し、制御信号をタイミングジェネレータ２１８２に供給する。 The system I / F 2180 receives a video signal and a control signal from the reception demodulation unit 124, expands the received video signal into the storage unit 400, and supplies the control signal to the timing generator 2182.
　タイミングジェネレータ２１８２は、制御信号に応じて、記憶部４００、ゲート駆動回路部２１４、データ線駆動回路部２１６のタイミング制御を行う。すなわち、タイミングジェネレータ２１８２は、入力された制御信号に基づいて、ゲート駆動回路部２１４、データ線駆動回路部２１６に制御信号（同期信号）を供給し、各画素回路の表示開始タイミング、並びに、表示期間を制御する。 The timing generator 2182 controls the timing of the storage unit 400, the gate drive circuit unit 214, and the data line drive circuit unit 216 according to the control signal. That is, the timing generator 2182 supplies a control signal (synchronous signal) to the gate drive circuit unit 214 and the data line drive circuit unit 216 based on the input control signal, and displays the display start timing of each pixel circuit and the display. Control the period.
　オシレータ２１８４は、内部クロック信号を発生する。オシレータ２１８４は、水晶振動子、セラミック発振子などの電圧を印加することで、固有振動を起こす部品を回路内に備えて、内部クロック信号を発信してよい。オシレータ２１８４で発生された内部クロック信号は、タイミングジェネレータ２１８２に供給され、タイミング制御に使用される。 Oscillator 2184 generates an internal clock signal. The oscillator 2184 may include a component that causes natural vibration in the circuit by applying a voltage such as a crystal oscillator or a ceramic oscillator, and may transmit an internal clock signal. The internal clock signal generated by the oscillator 2184 is supplied to the timing generator 2182 and used for timing control.
　表示装置制御回路部２１８は、システムＩ／Ｆ２１８０に入力された映像信号に対して、所定の信号処理を行い、入力された映像信号に基づいて発光素子の発光輝度に対応する階調信号を生成し、生成した階調信号をデータ線駆動回路部２１６に出力する。また、表示装置制御回路部２１８は、入力される制御信号に基づいてゲート駆動回路部２１４を制御するための制御信号を生成し、生成した制御信号をデータ線駆動回路部２１６、および、ゲート駆動回路部２１４に出力する。 The display device control circuit unit 218 performs predetermined signal processing on the video signal input to the system I / F 2180, and generates a gradation signal corresponding to the light emission brightness of the light emitting element based on the input video signal. Then, the generated gradation signal is output to the data line drive circuit unit 216. Further, the display device control circuit unit 218 generates a control signal for controlling the gate drive circuit unit 214 based on the input control signal, and the generated control signal is used for the data line drive circuit unit 216 and the gate drive. Output to the circuit unit 214.
　データ線駆動回路部２１６は、表示装置制御回路部２１８で生成された階調信号に基づいて、表示パネル部２１２のデータ線を駆動する。具体的には、データ線駆動回路部２１６は、階調信号および制御信号（水平同期信号）に基づいて、それぞれの画素回路２１２０に階調信号を反映した映像信号電圧（データ電圧）を出力する。 The data line drive circuit unit 216 drives the data line of the display panel unit 212 based on the gradation signal generated by the display device control circuit unit 218. Specifically, the data line drive circuit unit 216 outputs a video signal voltage (data voltage) reflecting the gradation signal to each pixel circuit 2120 based on the gradation signal and the control signal (horizontal synchronization signal). ..
　ゲート駆動回路部２１４は、表示装置制御回路部２１８で生成された制御信号に基づいて、表示パネル部２１２の走査線を駆動する。具体的には、ゲート駆動回路部２１４は、制御信号（垂直同期信号、および、水平同期信号）に基づいて、それぞれの画素回路２１２０に走査信号などを、少なくとも表示ライン単位で出力する。 The gate drive circuit unit 214 drives the scanning line of the display panel unit 212 based on the control signal generated by the display device control circuit unit 218. Specifically, the gate drive circuit unit 214 outputs a scanning signal or the like to each pixel circuit 2120 based on the control signals (vertical synchronization signal and horizontal synchronization signal) at least in units of display lines.
　ここで、表示装置制御回路部２１８が出力する制御信号は高周波であり、伝送路から、無線通信部１００の各通信部（移動通信部１１０、地上デジタル放送通信部１２０）に影響を与える高周波ノイズを輻射する。また、表示装置制御回路部２１８と、データ線駆動回路部２１６、および、ゲート駆動回路部２１４との伝送路間においても、周波数に依存した高調波ノイズを輻射する。したがって、高調波ノイズの周波数が無線通信部１００の受信周波数帯域に一致した場合、受信感度が低下する。 Here, the control signal output by the display device control circuit unit 218 is high frequency, and high frequency noise affecting each communication unit (mobile communication unit 110, terrestrial digital broadcasting communication unit 120) of the wireless communication unit 100 from the transmission line. To radiate. Further, frequency-dependent harmonic noise is also radiated between the transmission lines of the display device control circuit unit 218, the data line drive circuit unit 216, and the gate drive circuit unit 214. Therefore, when the frequency of the harmonic noise matches the reception frequency band of the wireless communication unit 100, the reception sensitivity is lowered.
　音響出力部２２０は、スピーカーを備えて、音響を出力する。振動モータ部２３０は、モータを備えて、所定のバイブレーションパターンに従って、振動を発生する。入力部２４０は、タッチパネル、操作ボタン等を備えて、ユーザの操作を受け付ける。 The sound output unit 220 includes a speaker and outputs sound. The vibration motor unit 230 includes a motor and generates vibration according to a predetermined vibration pattern. The input unit 240 includes a touch panel, operation buttons, and the like, and accepts user operations.
（制御部）
　制御部３００は、情報処理装置１０の全体の制御を行う。制御部３００は、受信レベル判定部３１０と、周波数変更回路部３２０と、を含む。 (Control unit)
The control unit 300 controls the entire information processing apparatus 10. The control unit 300 includes a reception level determination unit 310 and a frequency change circuit unit 320.
　制御部３００は、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）を備えて、受信レベル判定部３１０、周波数変更回路部３２０の機能を実現してよい。すなわち、ＣＰＵは、後述する記憶部４００が備えるＲＯＭに格納されたプログラムを実行し、ＲＡＭをデータ作業領域に使用することで、制御部３００の機能を実行してよい。 The control unit 300 may include a CPU (Central Processing Unit) and realize the functions of the reception level determination unit 310 and the frequency change circuit unit 320. That is, the CPU may execute the function of the control unit 300 by executing the program stored in the ROM included in the storage unit 400 described later and using the RAM for the data work area.
　受信レベル判定部３１０は、地上デジタル放送通信部１２０が受信した地上デジタル放送波の受信レベルを判定する。受信レベル判定部３１０は、地上デジタル放送通信部１２０が備える受信復調部１２４が地上デジタル放送の電波を復調した後に、ビット誤り率（ＢＥＲ）、変調誤差比（ＭＥＲ）、搬送波電力対雑音電力比（Ｃ／Ｎ）を測定した結果を用いて、地上デジタル放送の電波の受信レベルを判定する。 The reception level determination unit 310 determines the reception level of the terrestrial digital broadcast wave received by the terrestrial digital broadcast communication unit 120. After the reception demodulation unit 124 included in the terrestrial digital broadcasting communication unit 120 demodulates the radio wave of the terrestrial digital broadcasting, the reception level determination unit 310 has a bit error rate (BER), a modulation error ratio (MER), and a carrier power to noise power ratio. Using the result of measuring (C / N), the reception level of the radio wave of the terrestrial digital broadcast is determined.
　周波数変更回路部３２０は、受信レベル判定部３１０の判定結果に基づいて、表示装置制御回路部２１８が備えるオシレータ２１８４の出力周波数を変更する。すなわち、周波数変更回路部３２０は、受信レベル判定部３１０が、受信状態不良と判定した場合、オシレータ２１８４の出力周波数の逓倍波が、地上デジタル放送の受信チャンネルの周波数帯域の範囲の外の値になるようにオシレータ２１８４の出力周波数を変更する。 The frequency change circuit unit 320 changes the output frequency of the oscillator 2184 included in the display device control circuit unit 218 based on the determination result of the reception level determination unit 310. That is, when the reception level determination unit 310 determines that the reception state is poor, the frequency change circuit unit 320 causes the multiplied wave of the output frequency of the oscillator 2184 to be a value outside the frequency band range of the reception channel of the terrestrial digital broadcast. The output frequency of the oscillator 2184 is changed so as to be.
　図５は、本開示の周波数変更回路部の構成例を示す図である。周波数変更回路部３２０は、ＰＬＬ回路であり、スイッチ３２００と、１／Ｒ分周器３２０２と、位相比較器３２０４と、電圧制御発振回路３２０６と、１／Ｎ可変分周器３２０８と、を備える。 FIG. 5 is a diagram showing a configuration example of the frequency changing circuit unit of the present disclosure. The frequency change circuit unit 320 is a PLL circuit, and includes a switch 3200, a 1 / R divider 3202, a phase comparator 3204, a voltage control oscillation circuit 3206, and a 1 / N variable divider 3208. ..
　スイッチ３２００は、オシレータ２１８４の出力周波数が、周波数変更回路部３２０を介してタイミングジェネレータ２１８２に供給されるか、タイミングジェネレータ２１８２に直接供給されるかを切り替える。スイッチ３２００には、単極双投式（Ｓｉｎｇｌｅ　Ｐｏｌｅ　Ｄｏｕｂｌｅ　Ｔｈｒｏｗｓ）のスイッチを用いることができる。 The switch 3200 switches whether the output frequency of the oscillator 2184 is supplied to the timing generator 2182 via the frequency change circuit unit 320 or is directly supplied to the timing generator 2182. As the switch 3200, a single pole double throw type switch can be used.
　１／Ｒ分周器３２０２は、オシレータ２１８４から入力された出力周波数ｆｒを分周し、周波数ｆｒ／Ｒとして出力し、位相比較器３２０４に入力する。周波数変更回路部３２０の出力周波数ｆｏｕｔは、電圧制御発振回路３２０６からの出力がタイミングジェネレータ２１８２に供給されるとともに、１／Ｎ可変分周器３２０８に供給される。 The 1 / R divider 3202 divides the output frequency fr input from the oscillator 2184, outputs the frequency fr / R, and inputs the output frequency fr to the phase comparator 3204. The output frequency fout of the frequency change circuit unit 320 is supplied to the timing generator 2182 and to the 1 / N variable divider 3208 as well as the output from the voltage control oscillation circuit 3206.
　１／Ｎ可変分周器３２０８には、ＣＰＵからの分周比設定信号が入力されており、周波数変更回路部３２０の出力周波数ｆｏｕｔは、分周比設定信号により設定された分周比Ｎにてｆｏｕｔ／Ｎに分周され、ループをなして、位相比較器３２０４のもう片方の比較入力に入力される。 A frequency division ratio setting signal from the CPU is input to the 1 / N variable frequency divider 3208, and the output frequency fout of the frequency change circuit unit 320 is set to the frequency division ratio N set by the frequency division ratio setting signal. It is divided into frequency / N, forms a loop, and is input to the other comparison input of the phase comparator 3204.
　位相比較器３２０４は、オシレータ２１８４の出力周波数ｆｒを分周した周波数ｆｒ／Ｒと、ＣＰＵにて設定される分周比Ｎで出力周波数を分周した周波数ｆｏｕｔ／Ｎと、を比較し、その位相差を電圧として電圧制御発振回路３２０６に出力する。 The phase comparator 3204 compares the frequency fr / R obtained by dividing the output frequency fr of the oscillator 2184 with the frequency fout / N obtained by dividing the output frequency by the frequency dividing ratio N set by the CPU. The phase difference is output as a voltage to the voltage control oscillation circuit 3206.
　電圧制御発振回路３２０６は、電圧（制御電圧）で発振周波数を制御する発振回路である。電圧制御発振回路３２０６は、位相比較器３２０４の出力電圧に基づいて出力周波数ｆｏｕｔを決定し、出力周波数ｆｏｕｔを出力する。出力周波数ｆｏｕｔは、１／Ｎ可変分周器３２０８に入力され、分周比Ｎにてｆｏｕｔ／Ｎに分周され、ループをなして、位相比較器３２０４のもう片方の比較入力に入力され、位相差を示す電圧が電圧制御発振回路３２０６に入力される。このループにより、ｆｒ／Ｒとｆｏｕｔ／Ｎは、常に同じ周波数となるように制御される仕組みである。つまり、周波数変更回路部３２０の出力周波数ｆｏｕｔは、ＣＰＵからの分周比設定信号により、ｆｒ／Ｒ単位で制御することが可能であり、Ｒを大きくとることで細かな出力周波数の設定が可能である。 The voltage control oscillation circuit 3206 is an oscillation circuit that controls the oscillation frequency with a voltage (control voltage). The voltage control oscillation circuit 3206 determines the output frequency fout based on the output voltage of the phase comparator 3204, and outputs the output frequency fout. The output frequency fout is input to the 1 / N variable frequency divider 3208, divided into fout / N at the division ratio N, looped, and input to the other comparison input of the phase comparator 3204. A voltage indicating the phase difference is input to the voltage control oscillation circuit 3206. By this loop, fr / R and fout / N are controlled so as to always have the same frequency. That is, the output frequency fout of the frequency changing circuit unit 320 can be controlled in fr / R units by the frequency division ratio setting signal from the CPU, and a fine output frequency can be set by increasing R. Is.
（記憶部）
　記憶部４００は、制御部３００の演算内容やプログラムなどの各種情報の記憶装置である。記憶部４００は、変更後周波数記憶部４１０を備える。記憶部４００には、地上デジタル放送のチャンネル毎の周波数帯域を記憶させておく。記憶部４００は、例えば、ＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）と、ＲＯＭ（Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙ）のような主記憶装置と、ＨＤＤ（Ｈａｒｄ　Ｄｉｓｋ　Ｄｒｉｖｅ）、ＳＳＤ（Ｓｏｌｉｄ　Ｓｔａｔｅ　Ｄｒｉｖｅ）などの外部記憶装置とのうち、少なくとも１つ含む。 (Memory)
The storage unit 400 is a storage device for various information such as calculation contents and programs of the control unit 300. The storage unit 400 includes a modified frequency storage unit 410. The storage unit 400 stores the frequency band for each channel of terrestrial digital broadcasting. The storage unit 400 includes, for example, a RAM (Random Access Memory), a main storage device such as a ROM (Read Only Memory), and an external storage device such as an HDD (Hard Disk Drive) and an SSD (Solid State Drive). , Including at least one.
　変更後周波数記憶部４１０には、オシレータ２１８４の出力周波数の高調波成分が受信チャンネルの受信周波数帯域に干渉しない周波数のうち、オシレータ２１８４の出力周波数からの差分が可能な限り小さくなる周波数を予め計算して、記憶部４００に記憶させておく。 After the change, the frequency storage unit 410 calculates in advance the frequency at which the harmonic component of the output frequency of the oscillator 2184 does not interfere with the reception frequency band of the receiving channel, and the difference from the output frequency of the oscillator 2184 is as small as possible. Then, it is stored in the storage unit 400.
　変更後周波数記憶部４１０に記憶する変更後のオシレータ２１８４の出力周波数について説明する。地上デジタル放送の周波数帯域として、４７０ＭＨｚから７１０ＭＨｚ（Ｃｈ．１３からＣｈ．５２）が割り当てられている。チャンネル毎の占有帯域の周波数幅は、５．５７ＭＨｚである。ここで、オシレータ２１８４の出力周波数をＸとし、オシレータ２１８４の出力周波数のｎ逓倍の周波数ｎＸが受信チャンネルの占有帯域に含まれるとする。チャンネル毎の占有帯域の周波数幅は、５．５７ＭＨｚであるから、ｎ逓倍の周波数ｎＸを最大で２．７８５ＭＨｚ変更することで、ｎ逓倍の周波数を受信チャンネルの占有帯域の外の値に変更することができる。ｎ逓倍の周波数ｎＸを２．７８５ＭＨｚ変更するには、基本周波数Ｘを１／ｎ×２．７８５ＭＨｚだけ増加、又は、減少させればよい。変更後周波数記憶部４１０には、前述の方法で算出された変更後のオシレータ２１８４の周波数が記憶されている。 The output frequency of the changed oscillator 2184 stored in the changed frequency storage unit 410 will be described. As the frequency band of terrestrial digital broadcasting, 470 MHz to 710 MHz (Ch.13 to Ch.52) are assigned. The frequency width of the occupied band for each channel is 5.57 MHz. Here, it is assumed that the output frequency of the oscillator 2184 is X, and the frequency nX obtained by multiplying the output frequency of the oscillator 2184 by n is included in the occupied band of the receiving channel. Since the frequency width of the occupied band for each channel is 5.57 MHz, the n-multiplied frequency is changed to a value outside the occupied band of the receiving channel by changing the n-multiplied frequency nX at a maximum of 2.785 MHz. be able to. In order to change the n-multiplied frequency nX by 2.785 MHz, the fundamental frequency X may be increased or decreased by 1 / n × 2.785 MHz. The frequency storage unit 410 after the change stores the frequency of the oscillator 2184 after the change calculated by the above method.
　これにより、オシレータ２１８４の出力周波数を変更することに伴う、表示パネル部２１２の画像出力のフレームレートや輝度の変化量を小さくして画質の変化を少なくすることができる。オシレータ２１８４の出力周波数の変化が微小な場合は画質の変化は微小であり、ユーザからはその変化が分からない程度に抑えることができる。 As a result, it is possible to reduce the amount of change in the frame rate and brightness of the image output of the display panel unit 212 due to the change in the output frequency of the oscillator 2184, and to reduce the change in image quality. When the change in the output frequency of the oscillator 2184 is minute, the change in image quality is minute, and the change can be suppressed to the extent that the user cannot see the change.
　次に情報処理装置１０の動作について、次の順序で説明する。
１．地上デジタル放送の受信レベルの判定
２．オシレータの出力周波数の変更
３．オシレータの出力周波数変更の具体例を用いた説明 Next, the operation of the information processing apparatus 10 will be described in the following order.
1. 1. Judgment of reception level of terrestrial digital broadcasting 2. Change the output frequency of the oscillator 3. Explanation using a specific example of changing the output frequency of the oscillator
１．地上デジタル放送の受信レベルの判定
　本実施形態に係る情報処理装置１０は、地上デジタル放送の受信レベルに応じて、オシレータ２１８４の出力周波数を変更する。したがって、受信レベル判定部３１０は、地上デジタル放送の受信状態を判定し、周波数変更回路部３２０は受信レベル判定部３１０の判定結果に基づいて、オシレータ２１８４の出力周波数を変更する。 1. 1. Determining the reception level of terrestrial digital broadcasting The information processing apparatus 10 according to the present embodiment changes the output frequency of the oscillator 2184 according to the reception level of terrestrial digital broadcasting. Therefore, the reception level determination unit 310 determines the reception state of the terrestrial digital broadcast, and the frequency change circuit unit 320 changes the output frequency of the oscillator 2184 based on the determination result of the reception level determination unit 310.
（受信レベル判定部の判定フロー）
　図６は、本開示の受信レベル判定部の判定手順を説明するフローチャートである。図６を用いて受信レベル判定部３１０の判定フローを説明する。受信アンテナ部１２２が受信する地上デジタル放送の放送信号を放送チャンネル毎に選局する（ステップＳ１００）。選局された放送信号の搬送波電力対雑音電力比（Ｃ／Ｎ）、変調誤差比（ＭＥＲ）、ビット誤り率（ＢＥＲ）を取得する（ステップＳ１０２）。取得された搬送波電力対雑音電力比（Ｃ／Ｎ）が予め設定された異常判定値（例えば、２５ｄＢ）以上であるかを判定する（ステップＳ１０４）。搬送波電力対雑音電力比（Ｃ／Ｎ）が予め設定された異常判定値（例えば、２５ｄＢ）以上であると判定された場合（ステップＳ１０４；Ｙｅｓ）、変調誤差比（ＭＥＲ）が予め設定された異常判定値（例えば、２２ｄＢ）以上であるかを判定する（ステップＳ１０６）。変調誤差比（ＭＥＲ）が異常判定値（例えば、２２ｄＢ）以上であると判定された場合（ステップＳ１０６；Ｙｅｓ）、ビット誤り率（ＢＥＲ）が異常判定値（例えば、２．００Ｅ－４）以下であるかを判定する（ステップＳ１０８）。ビット誤り率（ＢＥＲ）が異常判定値（例えば、２．００Ｅ－４）以下であれば（ステップＳ１０８；Ｙｅｓ）、受信状態が正常と判定する（ステップＳ１１０）。 (Judgment flow of reception level judgment unit)
FIG. 6 is a flowchart illustrating a determination procedure of the reception level determination unit of the present disclosure. The determination flow of the reception level determination unit 310 will be described with reference to FIG. The broadcast signal of the terrestrial digital broadcast received by the receiving antenna unit 122 is selected for each broadcast channel (step S100). The carrier power-to-noise power ratio (C / N), modulation error ratio (MER), and bit error rate (BER) of the selected broadcast signal are acquired (step S102). It is determined whether the acquired carrier power to noise power ratio (C / N) is equal to or higher than a preset abnormality determination value (for example, 25 dB) (step S104). When it is determined that the carrier power to noise power ratio (C / N) is equal to or higher than a preset abnormality determination value (for example, 25 dB) (step S104; Yes), the modulation error ratio (MER) is preset. It is determined whether or not it is an abnormality determination value (for example, 22 dB) or more (step S106). When it is determined that the modulation error ratio (MER) is equal to or greater than the abnormality determination value (for example, 22 dB) (step S106; Yes), the bit error rate (BER) is equal to or less than the abnormality determination value (for example, 2.00E-4). (Step S108). If the bit error rate (BER) is equal to or less than the abnormality determination value (for example, 2.00E-4) (step S108; Yes), it is determined that the reception state is normal (step S110).
　ステップＳ１０４において、搬送波電力対雑音電力比（Ｃ／Ｎ）が、予め設定された異常判定値（例えば、２５ｄＢ）未満であると判定された場合（ステップＳ１０４；Ｎｏ）、受信レベル判定部３１０は受信状態不良と判定する（ステップＳ１１２）。ステップＳ１０６において、変調誤差比（ＭＥＲ）が、異常判定用として、予め設定された判定値（例えば、２２ｄＢ）未満であると判定された場合、受信レベル判定部３１０は受信状態不良と判定する（ステップＳ１１２）。ステップＳ１０８において、ビット誤り率（ＢＥＲ）が、異常判定用として、予め設定された判定値（例えば、２．００Ｅ－４）未満であると判定された場合、受信レベル判定部３１０は受信状態不良と判定する（ステップＳ１１２）。 When it is determined in step S104 that the carrier power to noise power ratio (C / N) is less than a preset abnormality determination value (for example, 25 dB) (step S104; No), the reception level determination unit 310 It is determined that the reception state is poor (step S112). If it is determined in step S106 that the modulation error ratio (MER) is less than a preset determination value (for example, 22 dB) for abnormality determination, the reception level determination unit 310 determines that the reception status is poor (for example, 22 dB). Step S112). If it is determined in step S108 that the bit error rate (BER) is less than a preset determination value (for example, 2.00E-4) for abnormality determination, the reception level determination unit 310 has a poor reception condition. (Step S112).
２．オシレータの出力周波数の変更
　受信レベル判定部３１０が、受信状態不良と判定すると、周波数変更回路部３２０は、オシレータ２１８４の出力周波数を変更する。 2. 2. Changing the output frequency of the oscillator When the reception level determination unit 310 determines that the reception state is defective, the frequency change circuit unit 320 changes the output frequency of the oscillator 2184.
（周波数変更回路部の動作フロー）
　図７は、本開示の周波数変更回路部の作用を説明するフローチャートである。図７を用いて周波数変更回路部３２０の処理を説明する。受信レベル判定部３１０の判定結果を取得し、受信状態不良か判定する（ステップＳ２００）。受信レベル判定部３１０が、受信状態不良と判定していた場合（ステップＳ２００；Ｙｅｓ）、周波数変更回路部３２０は、地上デジタル放送の受信チャンネルを確認する（ステップＳ２０２）。受信チャンネルが確認できたら、記憶部４００から確認された受信チャンネルが使用する周波数帯域を取得する（ステップＳ２０４）。周波数帯域が取得されたら、記憶部４００から使用する周波数帯域に応じた変更後のオシレータ２１８４の出力周波数を取得する（ステップＳ２０６）。変更後のオシレータ２１８４の出力周波数が取得されたら、１／Ｒ分周器３２０２の分周比Ｒと変更後のオシレータ２１８４の出力周波数ｆｏｕｔから、１／Ｎ可変分周器３２０８の分周比Ｎを計算する（ステップＳ２０８）。１／Ｎ可変分周器３２０８の分周比Ｎが計算されたら、１／Ｎ可変分周器３２０８に分周比Ｎを入力する（ステップＳ２１０）。オシレータ２１８４の出力が周波数変更回路部３２０に入力されるようにスイッチ３２００を切り替える（ステップＳ２１２）。 (Operation flow of frequency change circuit)
FIG. 7 is a flowchart illustrating the operation of the frequency changing circuit unit of the present disclosure. The processing of the frequency changing circuit unit 320 will be described with reference to FIG. 7. The determination result of the reception level determination unit 310 is acquired, and it is determined whether the reception state is defective (step S200). When the reception level determination unit 310 determines that the reception state is poor (step S200; Yes), the frequency change circuit unit 320 confirms the reception channel of the terrestrial digital broadcast (step S202). After confirming the receiving channel, the frequency band used by the confirmed receiving channel is acquired from the storage unit 400 (step S204). When the frequency band is acquired, the output frequency of the changed oscillator 2184 according to the frequency band to be used is acquired from the storage unit 400 (step S206). When the output frequency of the changed oscillator 2184 is acquired, the division ratio N of the 1 / N variable divider 3208 is obtained from the division ratio R of the 1 / R divider 3202 and the output frequency fout of the changed oscillator 2184. Is calculated (step S208). After the division ratio N of the 1 / N variable divider 3208 is calculated, the division ratio N is input to the 1 / N variable divider 3208 (step S210). The switch 3200 is switched so that the output of the oscillator 2184 is input to the frequency change circuit unit 320 (step S212).
　ステップＳ２００において取得した受信レベル判定部３１０の判定結果が、受信状態良好の場合（ステップＳ２００；Ｎｏ）、周波数変更回路部３２０は処理を終了する。 When the determination result of the reception level determination unit 310 acquired in step S200 is that the reception state is good (step S200; No), the frequency change circuit unit 320 ends the process.
３．オシレータの出力周波数変更の具体例を用いた説明
　周波数変更回路部３２０の動作について具体例を用いて説明する。オシレータ２１８４の出力周波数が１０４ＭＨｚである場合、基本周波数の５逓倍の周波数は５２０ＭＨｚ、６逓倍の周波数は６２４ＭＨｚとなる。一方、地上デジタル放送の受信チャンネル（物理チャンネル）が、３８ｃｈの場合、周波数帯域は６２０．３５７８５７ＭＨｚから６２５．９２７８５７ＭＨｚである。したがって、オシレータ２１８４の出力周波数（１０４ＭＨｚ）の６逓倍の周波数（６２４ＭＨｚ）が、地上デジタル放送の３８ｃｈの周波数帯域に含まれる。そのため、オシレータの出力周波数の６逓倍の周波数は、地上デジタル放送の受信に際して、ノイズとして作用する。 3. 3. Explanation using a specific example of changing the output frequency of the oscillator The operation of the frequency changing circuit unit 320 will be described using a specific example. When the output frequency of the oscillator 2184 is 104 MHz, the frequency of 5 times the fundamental frequency is 520 MHz and the frequency of 6 times is 624 MHz. On the other hand, when the receiving channel (physical channel) of terrestrial digital broadcasting is 38ch, the frequency band is from 620.3575857 MHz to 625.927857 MHz. Therefore, a frequency (624 MHz) obtained by multiplying the output frequency (104 MHz) of the oscillator 2184 by 6 is included in the frequency band of 38 channels of terrestrial digital broadcasting. Therefore, the frequency that is 6 times the output frequency of the oscillator acts as noise when receiving terrestrial digital broadcasting.
　ここで、受信レベル判定部３１０が受信状態不良と判定すると、周波数変更回路部３２０はオシレータ２１８４の出力周波数を変更する。周波数変更回路部３２０がオシレータ２１８４の出力周波数を１パーセント増加させると、オシレータ２１８４の出力周波数は、１０５ＭＨｚとなり、５逓倍の周波数は５２５ＭＨｚ、６逓倍の周波数は６３０ＭＨｚとなる。そのため、オシレータ２１８４の出力周波数の６逓倍の周波数が、地上デジタル放送の３８ｃｈの周波数帯域の範囲の外の値となることから、受信感度の低下を防止することができる。 Here, if the reception level determination unit 310 determines that the reception state is defective, the frequency change circuit unit 320 changes the output frequency of the oscillator 2184. When the frequency change circuit unit 320 increases the output frequency of the oscillator 2184 by 1%, the output frequency of the oscillator 2184 becomes 105 MHz, the frequency multiplied by 5 becomes 525 MHz, and the frequency multiplied by 6 becomes 630 MHz. Therefore, since the frequency 6 times the output frequency of the oscillator 2184 is a value outside the range of the 38ch frequency band of terrestrial digital broadcasting, it is possible to prevent a decrease in reception sensitivity.
　なお、本技術は以下のような構成も取ることができる。
（１）地上デジタル放送を受信する無線通信部と、電波を発信する発信デバイスと、前記無線通信部が無線通信に使用する周波数帯域に対してノイズ影響を与えない前記発信デバイスの周波数が予め記憶された記憶部と、前記無線通信部で使用する地上デジタル放送と前記記憶部に記憶されるデータに基づいて、前記発信デバイスを、前記無線通信部が無線通信に使用する周波数帯域に対してノイズ影響を与えない前記発信デバイスの周波数で動作させる制御部と、を備える情報処理装置。
（２）前記無線通信部は、地上デジタル放送波を受信復調する受信復調部と、受信復調した信号から、搬送波電力対雑音電力比（Ｃ／Ｎ）と、変調誤差比（ＭＥＲ）と、ビット誤り率（ＢＥＲ）と、を検出する受信品質検出部と、を備え、前記受信品質検出部は、前記搬送波電力対雑音電力比（Ｃ／Ｎ）と、前記変調誤差比（ＭＥＲ）と、前記ビット誤り率（ＢＥＲ）と、を用いて受信レベルについて判定し、前記制御部は、前記受信レベルの判定結果に基づいて、前記発信デバイスの周波数を変更するか否かを判定する、前記（１）に記載の情報処理装置。
（３）映像信号を表示するディスプレイ装置を備え、前記発信デバイスは、前記ディスプレイ装置のオシレータであり、前記制御部は、前記オシレータの出力周波数を、前記記憶部に記憶された周波数に含まれ、地上デジタル放送の受信チャンネルに応じて選択された周波数とする、前記（２）に記載の情報処理装置。
（４）前記ディスプレイ装置は有機ＥＬディスプレイである、前記（３）に記載の情報処理装置。
（５）前記記憶部に記憶された変更後のオシレータの出力周波数は、前記オシレータの変更前の出力周波数を意味する第１出力周波数と、前記オシレータの変更後の出力周波数を意味する第２出力周波数との差が、第１出力周波数に対して１パーセント以上２パーセント以下である、前記（３）または前記（４）に記載の情報処理装置。
（６）無線通信部が受信する地上デジタル放送の放送信号をチャンネル毎に選局するステップと、選局された地上デジタル放送のチャンネルの周波数帯域を特定するステップと、前記地上デジタル放送を受信復調して、受信状態の判定を行うステップと、受信状態不良と判定された場合に、前記発信デバイスの周波数を予め設定された周波数に変更するステップと、をコンピューターに実行させるプログラム。
（７）無線通信部が受信する地上デジタル放送の放送信号をチャンネル毎に選局するステップと、選局された地上デジタル放送のチャンネルの周波数帯域を特定するステップと、前記地上デジタル放送を受信復調して、受信状態の判定を行うステップと、受信状態不良と判定された場合に、前記発信デバイスの周波数を予め設定された周波数に変更するステップと、を含む情報処理装置の制御方法。 The present technology can also have the following configurations.
(1) The frequency of the wireless communication unit that receives terrestrial digital broadcasting, the transmission device that transmits radio waves, and the transmission device that does not affect the frequency band used by the wireless communication unit for wireless communication is stored in advance. Based on the stored storage unit, the terrestrial digital broadcast used by the wireless communication unit, and the data stored in the storage unit, the transmitting device is noisy with respect to the frequency band used by the wireless communication unit for wireless communication. An information processing device including a control unit that operates at the frequency of the transmitting device that does not affect the transmission device.
(2) The wireless communication unit is a reception demodulation unit that receives and demodulates terrestrial digital broadcast waves, and a carrier power to noise power ratio (C / N), a modulation error ratio (MER), and bits from the received demodulated signal. The reception quality detection unit includes a reception quality detection unit that detects an error rate (BER), and the reception quality detection unit includes the carrier wave power to noise power ratio (C / N), the modulation error ratio (MER), and the above. The bit error rate (BER) is used to determine the reception level, and the control unit determines whether or not to change the frequency of the transmitting device based on the determination result of the reception level. ). Information processing device.
(3) A display device for displaying a video signal is provided, the transmitting device is an oscillator of the display device, and the control unit includes the output frequency of the oscillator in the frequency stored in the storage unit. The information processing apparatus according to (2) above, wherein the frequency is selected according to the reception channel of terrestrial digital broadcasting.
(4) The information processing device according to (3) above, wherein the display device is an organic EL display.
(5) The output frequency of the changed oscillator stored in the storage unit is the first output frequency which means the output frequency before the change of the oscillator and the second output which means the output frequency after the change of the oscillator. The information processing apparatus according to (3) or (4) above, wherein the difference from the frequency is 1% or more and 2% or less with respect to the first output frequency.
(6) A step of selecting the broadcast signal of the terrestrial digital broadcast received by the wireless communication unit for each channel, a step of specifying the frequency band of the selected terrestrial digital broadcast channel, and reception and demodulation of the terrestrial digital broadcast. A program that causes a computer to execute a step of determining the reception status and a step of changing the frequency of the transmitting device to a preset frequency when the reception status is determined to be poor.
(7) A step of selecting the broadcast signal of the terrestrial digital broadcast received by the wireless communication unit for each channel, a step of specifying the frequency band of the selected terrestrial digital broadcast channel, and reception and demodulation of the terrestrial digital broadcast. A control method for an information processing apparatus including a step of determining a reception state and a step of changing the frequency of the transmitting device to a preset frequency when the reception state is determined to be poor.
　　１０　情報処理装置
　１００　無線通信部
　１１０　移動通信部
　１２０　地上デジタル放送通信部
　１２２　受信アンテナ部
　１２４　受信復調部
　２００　ユーザーインターフェース部
　２１０　表示装置部
　２２０　音響出力部
　２３０　振動モータ部
　２４０　入力部
　３００　制御部
　３１０　受信レベル判定部
　３２０　周波数変更回路部
　４００　記憶部
　４１０　変更後周波数記憶部 10 Information processing device 100 Wireless communication section 110 Mobile communication section 120 Terrestrial digital broadcasting communication section 122 Reception antenna section 124 Reception demodulation section 200 User interface section 210 Display device section 220 Acoustic output section 230 Vibration motor section 240 Input section 300 Control section 310 Reception Level determination unit 320 Frequency change circuit unit 400 Storage unit 410 Change frequency storage unit

Claims (7)

  1. 　地上デジタル放送を受信する無線通信部と、
    　電波を発信する発信デバイスと、
    　前記無線通信部が無線通信に使用する周波数帯域に対してノイズ影響を与えない前記発信デバイスの周波数が予め記憶された記憶部と、
    　前記無線通信部で使用する地上デジタル放送と前記記憶部に記憶されるデータに基づいて、前記発信デバイスを、前記無線通信部が無線通信に使用する周波数帯域に対してノイズ影響を与えない前記発信デバイスの周波数で動作させる制御部と、を備える
    　情報処理装置。     The wireless communication unit that receives terrestrial digital broadcasting,
    A transmission device that emits radio waves and
    A storage unit in which the frequency of the transmitting device that does not affect the frequency band used by the wireless communication unit for wireless communication is stored in advance, and a storage unit.
    Based on the terrestrial digital broadcast used by the wireless communication unit and the data stored in the storage unit, the transmission device is transmitted by the wireless communication unit without affecting the frequency band used for wireless communication. An information processing device including a control unit that operates at the frequency of the device.
  2. 　前記無線通信部は、地上デジタル放送波を受信復調する受信復調部と、受信復調した信号から、搬送波電力対雑音電力比（Ｃ／Ｎ）と、変調誤差比（ＭＥＲ）と、ビット誤り率（ＢＥＲ）と、を検出する受信品質検出部と、を備え、
    　前記受信品質検出部は、前記搬送波電力対雑音電力比（Ｃ／Ｎ）と、前記変調誤差比（ＭＥＲ）と、前記ビット誤り率（ＢＥＲ）と、を用いて受信レベルについて判定し、
    　前記制御部は、前記受信レベルの判定結果に基づいて、前記発信デバイスの周波数を変更するか否かを判定する
    　請求項１に記載の情報処理装置。     The wireless communication unit includes a reception demodulation unit that receives and demodulates terrestrial digital broadcast waves, a carrier power to noise power ratio (C / N), a modulation error ratio (MER), and a bit error rate (bit error rate) from the received demodulated signal. BER) and a reception quality detector to detect
    The reception quality detection unit determines the reception level using the carrier power to noise power ratio (C / N), the modulation error ratio (MER), and the bit error rate (BER).
    The information processing device according to claim 1, wherein the control unit determines whether or not to change the frequency of the transmitting device based on the determination result of the reception level.
  3. 　映像信号を表示するディスプレイ装置を備え、
    　前記発信デバイスは、前記ディスプレイ装置のオシレータであり、
    　前記制御部は、前記オシレータの出力周波数を、前記記憶部に記憶された周波数に含まれ、地上デジタル放送の受信チャンネルに応じて選択された周波数とする
    　請求項２に記載の情報処理装置。     Equipped with a display device that displays video signals
    The transmitting device is an oscillator of the display device.
    The information processing apparatus according to claim 2, wherein the control unit includes the output frequency of the oscillator in the frequency stored in the storage unit and uses the frequency selected according to the reception channel of terrestrial digital broadcasting.
  4. 　前記ディスプレイ装置は有機ＥＬディスプレイである
    　請求項３に記載の情報処理装置。     The information processing device according to claim 3, wherein the display device is an organic EL display.
  5. 　前記記憶部に記憶された変更後の前記オシレータの出力周波数は、前記オシレータの変更前の出力周波数を意味する第１出力周波数と、前記オシレータの変更後の出力周波数を意味する第２出力周波数との差が、前記第１出力周波数に対して１パーセント以上２パーセント以下である
    　請求項３または４に記載の情報処理装置。     The output frequency of the oscillator after the change stored in the storage unit includes a first output frequency which means the output frequency before the change of the oscillator and a second output frequency which means the output frequency after the change of the oscillator. The information processing apparatus according to claim 3 or 4, wherein the difference between the two is 1% or more and 2% or less with respect to the first output frequency.
  6. 　無線通信部が受信する地上デジタル放送の放送信号をチャンネル毎に選局するステップと、
    　選局された地上デジタル放送のチャンネルの周波数帯域を特定するステップと、
    　前記地上デジタル放送を受信復調して、受信状態の判定を行うステップと、
    　受信状態不良と判定された場合に、電波を発信する発信デバイスの周波数を予め設定された周波数に変更するステップと、
    　をコンピューターに実行させるプログラム。     The step of selecting the broadcast signal of terrestrial digital broadcasting received by the wireless communication unit for each channel,
    Steps to identify the frequency band of the selected terrestrial digital broadcasting channel,
    The step of receiving and demodulating the terrestrial digital broadcasting and determining the reception state,
    A step to change the frequency of the transmitting device that emits radio waves to a preset frequency when it is determined that the reception status is poor, and
    A program that causes a computer to run.
  7. 　無線通信部が受信する地上デジタル放送の放送信号をチャンネル毎に選局するステップと、
    　選局された地上デジタル放送のチャンネルの周波数帯域を特定するステップと、
    　前記地上デジタル放送を受信復調して、受信状態の判定を行うステップと、
    　受信状態不良と判定された場合に、電波を発信する発信デバイスの周波数を予め設定された周波数に変更するステップと、
    　を含む制御方法。     The step of selecting the broadcast signal of terrestrial digital broadcasting received by the wireless communication unit for each channel,
    Steps to identify the frequency band of the selected terrestrial digital broadcasting channel,
    The step of receiving and demodulating the terrestrial digital broadcasting and determining the reception state,
    A step to change the frequency of the transmitting device that emits radio waves to a preset frequency when it is determined that the reception status is poor, and
    Control methods including.
PCT/JP2020/026935 2020-07-09 2020-07-09 Information processing device, program, and control method WO2022009405A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008017322A (en) * 2006-07-07 2008-01-24 Sharp Corp Mobile phone
JP2009069804A (en) * 2007-09-12 2009-04-02 Samsung Electronics Co Ltd Display apparatus including wireless communication device and method of operating same
JP2010141538A (en) * 2008-12-10 2010-06-24 Toshiba Corp Electronic appliance and display control method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008017322A (en) * 2006-07-07 2008-01-24 Sharp Corp Mobile phone
JP2009069804A (en) * 2007-09-12 2009-04-02 Samsung Electronics Co Ltd Display apparatus including wireless communication device and method of operating same
JP2010141538A (en) * 2008-12-10 2010-06-24 Toshiba Corp Electronic appliance and display control method

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